Osteogenesis imperfecta is a condition of brittle bones, low muscle mass, and lax joints and ligaments. There are several types of this condition. Specific symptoms depend on the specific type and may include: 1  Blue or gray tint to the whites of the eyes. 2  Thin skin. 3  Curved spine. 4  Breathing problems. 5  Hearing loss.
Ashford Black Marble is the name given to a dark limestone, quarried from mines near Ashford-in-the-Water, in Derbyshire, England.Once cut, turned and polished, its shiny black surface is highly decorative. Ashford Black Marble is a very fine-grained sedimentary rock, and is not a true marble in the geological sense.It can be cut and inlaid with other decorative stones and minerals, using a technique known as pietra dura. Derby Museum has a diagram of Ecton Hill made from Ashford Black Marble and other minerals.shford Black Marble is a very fine-grained sedimentary rock, and is not a true marble in the geological sense.
The most common colors on the outer design are white and yellow, followed by green, blue, pink, orange, red, and purple, and may be either transparent or opaque. Latticinio Swirls are the most common type of hand made glass marble.Compared to most other handmade marbles, Latticinio Swirls have little value, though there are several factors that can increase their value, other than large size and/or rarity of colors (especially core color).LASS HAND MADE MARBLES. Hand made glass marbles were invented in Lauscha, Germany, in the late 1840s. They were produced until the early part of the twentieth century, when World War I and the invention of marble producing machinery in America effectively ended the hand made marble industry.